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Finding the Fourth Proportional to 19,476.65, 26,879.73 and 11,927.90

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Solution

The fourth proportional to 19,476.65, 26,879.73 and 11,927.90 is: 16,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,476.65 : 26,879.73 = 11,927.90 : x
  2. Step 2: Convert to fraction form
    19,476.65/26,879.73 = 11,927.90/x
  3. Step 3: Cross multiply
    19,476.65x = 26,879.73 × 11,927.90
  4. Step 4: Simplify right side
    19,476.65x = 320,618,731.47
  5. Step 5: Solve for x
    x = 320,618,731.47/19,476.65
  6. Step 6: Final answer
    x = 16,461.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.